def digest_bytes
import bend-collections@1.0.0.0/spec/crypto/secp256k1/ecdsa.bend as Ecdsaimport Base
267def digest_bytes(m: Maybe<&1, Array<U32>>) -> List<&2, U32>:
268 match m:
269 case None{}: Nil{}
270 case Some{a}: unpack(Array.to_list(~U32, a))